Heater.



110,743,571.' PATENTED Nov. 10, 1903.

s. G. SGANLAN. HEATER.

APPLGATION FILED JULY 6, 1903.

N0 MODEL.

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I UNITED STATES Y :Patented November 10, 1903.

SAM GWYN SCANLAN, OF CHICAGO, ILLINIS.

HEATER.`

SPECIFICATION forming part of Letters Patent N o. 743,571, dated November 10, 1903. Application iiled July 6, 1903. Serial No, 164,438. (No model.)

To all whom it may concern:

Be it known that I, SAM GWYN SCANLAN, a citizen of the United States, residing in the city of Chicago, County of Cook, and State oi' Illinois, have invented a new and useful Improvement in Heaters, of which the following is a specicatiou. Y

My invention relates to heaters adapted for the use of surgeons, physicians, and others requiring steam or heated water, sterilized or unsterilized, or compressed air for surgical, therapeutic, or domestic purposes.

The object of my invention is to provide a convenient, simply-constructed, and readilyoperable means for supplying at will these various requirements, and I attain my object by the mechanism illustrated in the accompanying drawings, inwhich- Figure 1 is ageneral side view of the complete device. Fig. 2 is a View of the tank and connections, taken chietly in vertical longitudinal section.

In connection with my present invention attention is directed to an application for patent on a heater constructed on somewhat similar lines, for which I tiled an application for` patent in the `United States Patent Office April 15, 1903, 'Serial No. 152,749.

Similar letters of reference denote similar parts in both gures of the drawings.

a represents a tank or other vessel, which is preferably held in an upright position by means of a stand h. This stand may be of any suitable design, butis preferably so constructed that said tank is removable therefrom. lVith exception of certain apertures, hereinafter described, said tank a is air and liquid tight, and at a convenient point, preferably in the top thereof, is the nipple or other pipe-coupling c, through which air or other gas may be introduced in said tank under pressure. The compressed gas may be supplied to said tank in any suitable mannerfor example, by means of the pump d, which connects with hose d'.

Inrorder to remove impurities from the air saidrnipple c through the as it is being introduced into the tank, it isV "desirable that a filter cshould be provided in said hose d. e represents a shut-od valve in the hose d for preventing the escape of air from the tank. A filler-cap e2, which is preferably screw-threaded, is provided in the upper portion of the tank to adord means for introducing the water.

At or near the top of the tank is a coupling f, which forms a point of connection for the hose f'. This hose may be furnished with any suitable shut-OEE valve and is designed to be used in connection with sprays,atomizers,and similar contrivances used by. physicians and others. Although not a necessary part of :my invention, it is desirable to provide a framework g at the top ot' the tank to hold the receptacles g' g. Said frame g is suitably supported by means of acolumn h, mounted upon the top of the tank.

'1l represents a discharge-pipe which has a receiving-opening i inside of the tank o., near the bottom thereof, and has a discharge-opening t2 at any convenient point. The valve or faucet i3 is provided in said pipe rl to control the discharge of Water through the same. Although I prefer that the pipe shall pass upward through the interior of the tank a, said pipe may extend upward along the outside thereof, it being not essential that'any considerable portion of said pipe, except the receiving-opening thereof, shall lie within said tank. An air or wat-er tight Wall or diaphram j is locatedin the lower portion of the tank, so as to form therein two chambers 0, and o2. By preference the upper chamber a is much larger in capacity than said lower chamber n?.

On the side of the tank at aslight distance above the diaphragm j is the valve-casing la, which is provided with three apertures lo Wks. Said aperture k connects with the upwardlyextending pipej'. Said aperture k2 connects directly with the interior of the tank above the diaphragm j, and said l aperture k3 connects with the pipe m, which connects with the chamber c2 immediately below the diaphragm j.

The valve n is so constructed as to constitute in conjunction with the casinglt a threeway cock, said valve having the straight central duct n', extending completely through .said valve, and the side duct n2, leading laterally from said duct n'. The parts are so arranged that when valve n is in one rotated position the pipe m is in communication with IOO the tank a only and when said valve is in a second rotated position pipem is in communication with pipej only. t

A second valvecasing o is located at or near the top of the tank and in conjunction with its valve p constitutes a three-way cock similar in construction and operation to the valve casing 7o and valve n therein. Said casing connects with the pipe j', tank d, and pipe q in such a' manner that when the valve p is in ,one rotated position the pipe j' is in communication with the tank only and when said valve is in the second rotated position the valvej is in communication with the pipe q only. This last condition is illustrated in Fig. 2 of the drawings. ,Said pipe q leads to any suitable device-such, for exam ple, as an atomizer or a sterilizer. In order to control the escape of fiuid through said pipe q, a shuto valve q' is provided therein.

Beneath the tank a is arranged a heatingcoil r, comprised of a number of turns of pipe, one extremity, r, communicating with the chamber 0.2 and the other extremity, r2, communicating with the bottom of the chamber a@ A shut-off valve r3 is provided, preferably, in the riser-pipe r4 and leads to the heating-coil r.

The burner s of any suitable design is arranged below the heating-coil r in such manner that the heat from said burner shall strike said coil and quickly raise the temperature of the water therein. In operationwater in its natural state-that is to say, cold and unsterilized-isintroducedintothe charnber a through the filler-cap e2 in such quantity as to leave an air-space at the top of the tank'. After the filler-cap has been replaced, so as to render the tank air-tight, air or other gas isintroduced under pressure into the top of chamber a by means of the air-pump dor other suitable means.

The function of the compressed air or other gases at the top of the tank a is to afford sufficient pressure to enable water to be drawn o through the discharge-pipe t' or pipe q. By proper manipulation and use of the apparatus the latter is now in readiness to furnish air or water under a variety of conditions, which will now separately be described.

First. Cold air under pressure may be drawn oft'directly fromthechamber ct through the valve-casing Oand pipe q.

Second. Cold unsterilized water may be drawn off directly from the chamber d by rotating the valvep so that there will be a connection vbetween the pipes ,7" and q and rotating the valve n so that there will be a connection between the chamber a and the pipe 47".

Third. lf hotwater is wanted for immediate use, the burner s may be lighted and the valve r3 opened to such an extent that water may pass slowly through the heating-coil r into the chamber a2. On account of the length of coil by supplying a sufficient amount ofi heat the water may be raised to boiling temperature as it passes through said heatingcoil. As soon as sufficient Water has been thus introduced into the chamber a2 the heated Water may be drawn off through the discharge-pipe 'L' by opening the valve .'3 therein. During this time, of course, the valve 'n will be rotated to such a position as to shut off communication between the chamber d and pipe m to prevent the Water from said chamber ct from passing to said chamber d2 by way of said pipe m instead of through the heating-coil r. l

Fourth. It' steam is wanted, it may be botained by rst causing the generation of steam in the chamber co2 by means of the burner s and heating-coil r and then drawing olf the resulting steam through the valves 'n and p and pipe q.

it is obvious that in case it is desired to sterilize all the water in the tank this may be accomplished by lighting the burner, opening the valve r3, and rotating the valve n to such a position that the pipe m will be in communication with the chamber a. Under these conditions the chamber d2 will become completely filled with water and there will be a complete circuit between the chambers d and a2 through the pipe r4, coil r, and pipe m. In order to completelysterilize all of the water, it will be necessary merely to continue the heating of the Water fora sufcient period of time. In using the apparatus under the last-named conditions the entire amount of Water for sterilization maybe drawn od at will through the discharge-pipe t'.

It is desirable-when steam is being drawn off from the top of the chamber a. through the pipes m,j', and q that the valve r3 remain closed or partially closed to prevent water from the chamber tt from passing into the chamber d2, and thereby completely fiiling the latter. A Moreover, if the valve r2 is closed and valves n and p out of communication with chamber ct' steam may be generated in the chamber a2, so that a steampressure in the chamber a2 may be obtained greater than the pressure in the chamber a. Furthermore, under these last-named conditions by shutting off communicationbetween chambers d and a2 it would be possible at any given time to draw off either steam from the upper portion of chamber a2, boiling water through the discharge-pipe 't' from the lower portion of chamber a2, cold air from the upper portion of chamber d', or comparatively cold water from the lower portion of chamber ct.

I do not Wish to be understood as limiting myself to any particular form of tank or methods of supporting same or of introducing compressed air thereinto. These elements are non-essential and for that reason are not specitically described in the appended claims.

What I do claim as new, and desire to secure by Letters Patent, is

1. In a heater, the combination of a tank l having two chambers therein arranged one above the other, a heating-coil connected to the lower chamber and also to the lower portion of the upper chamber in said tank; a discharge-pipe leading from the lower portion of said lower chamber and a second discharge-pipe leading from the upper portion of said lower chamber.

2. ln a heater, the combination of a tank having two chamberstherein arranged one above the other, a heating-coil connected to v the lower chamber and also to the lower portion of the upper chamber, a discharge-pipe leading from the lower portion of said lower chamber, a second discharge-pipe leading from the upper portion ofsaid lower chamber, and a three-way cock insaid second discharge-pipe adapted to discharge the heated fluid directly from saidlower chamber, to return the heated iiuid from said lower chamber to said upper chamber, or discharge directly the fluid of said upper chamber.

3. In a heater, the combination of a tank having two chambers therein one above the other, a heating-coil connected to the lower chamber and also tothe lower portion of the upper chamber in said tank, a discharge-pipe leading from the lower portion of said lower chamber, a second discharge-pipe leading from the upper portion of said lower chamber, a three-way cock in said second discharge-pipe connecting with the lower por v tion of said upper chamber, said three-way said lower chamber to said upper chamber, or to discharge directly the fluid from said upper chamber. v

4. In a heater, the combination of a tank having two chambers therein arranged one above the other, a heating-coil connected to the lower chamber and also to the lower portion of the upper chamber in said tank; a discharge-pipe leading from the upper portion of said lower chamber and a three-way cock in said discharge-pipe connecting with said upper chamber, said cock being adapted to discharge the fluid directly from said lower chamber, to return the heated water from said lower chamber to said upper chamber, or to discharge directly the uid from said upper chamber.

5. v In a heater, thecombination of a tank having two chambers therein arranged vone above the other, a heating-coil connected to the lower chamber and also to the lower portion of the upper chamber in said tank;

'a discharge pipe leading from the upper portion of said lower chamber, a threeway cock in said discharge-pipe connecting with said upper chamber, said cock being adapted to discharge theiiuid directlyT from said lower chamber, to return the heated water from said lower chamber to said upper chamber, or to discharge directly the vfluid from said upper chamber, and a second threeway cock in said discharge-pipe connecting with said upper chamber at a point above said rst three-way cock, said second cock being adapted to discharge directly the fluid from said lower chamber, to return the iiuid from said lower chamber to said upper chamber, or to discharge directly the fluid from the portion of said upper chamber above said first cock.

SAM GWYN SCANLAN.

Witnesses:

HOWARD M. COX, JENNIE I. MGDONALD. 

